/*
 * Syntelos 'SX'
 * Copyright (C) 1998, 2007  John Pritchard.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */
package syntelos.sx.methods;

import syntelos.sx.Request;
import syntelos.sx.Response;

import syntelos.sys.FileTransactionLockTimeout;

import alto.io.Authentication;
import alto.io.Check;
import alto.io.Code;
import alto.io.Output;
import alto.lang.Buffer;
import alto.lang.Value;
import alto.sys.Reference;


/**
 * 
 * @since 1.6
 */
public class Lock
    extends syntelos.sx.Response
{

    public Lock(){
        super();
    }


    @Code(Check.Review)
    public void respond(Request req)
        throws java.io.IOException,
               java.lang.InterruptedException
    {
        if (this.isAuthenticated(Authentication.NotApp)){
            long timeout = FileTransactionLockTimeout.Get(req);
            Reference reference;
            if (request.hasNotReference())
                reference = Request.ReferenceToIndex(req);
            else
                reference = req.getReference();

            if (reference.networkLockAcquire(timeout)){
                this.setHeader("Timeout",String.valueOf(timeout));
                this.setStatusOk();
            }
            else {
                this.setStatusConflict();
            }
        }
        else {
            this.setStatusUnauthorized();
        }
    }

}
